Bone Toothbrush marked Japan and Larkin. This is unusual being marked Japan and Larkin. Larkin was a US company that first started out making soaps etc and later furniture. Japan made a lot of toothbrushes. I cannot locate any information where Larkin made toothbrushes. But, this brush is clearly marked Japan just below the area where the brush bristles once were and marked Larkin in capital letters on the center of the handle. Definitely made of bone. Selling just as found. Length 6 1/2 inch; 1/2 inch to 5/8 inch across. Please share any known information and please ask any questions. Shipping cost is actual cost, no handling fee. Please search for Allies Vintage Alley to see my online store.